Der Einfluß inelastischer Wechselwirkungen zwischen Galaxien auf die Bildung und Entwicklung von Galaxienhaufen in offenen Universen.

Details Der Einfluß inelastischer Wechselwirkungen zwischen Galaxien auf die Bildung und Entwicklung von Galaxienhaufen in offenen Universen. Der Einfluß inelastischer Wechselwirkungen zwischen Galaxien auf die Bildung und Entwicklung von Galaxienhaufen in offenen Universen.

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992deiw.book.....a&link_type=abstract

Der Einfluß inelastischer Wechselwirkungen zwischen Galaxien auf die Bildung und Entwicklung von Galaxienhaufen in offenen Unive

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Cosmological n-body simulations were compared where the gravitational interactions between the galaxies are modelled alternatively by elastic or inelastic interactions. Both open and flat models of the universe are investigated. Initial conditions are generated according to the Zel'dovich-approximation. The results are discussed by means of graphical representations of the entire models and of single clusters, as well as in terms of two-point-correlation functions. Whereas the overall large-scale structures are very similar in the elastic and inelastic simulations, individual clusters evolve in a quite different way, when the inelastic braking between the galaxies is taken into account. The number of cluster members is reduced, while the masses and radii of the galaxies grow due to the interaction processes. The correlation function can be described as a power law also for small distances. It can be concluded that a description of interactions between galaxies which takes into account the inelastic features fits the observations better than purely elastic interactions.

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